Rotor Seal, 6 port, -COH Back Catalog number: CTS-21085 Availability: In the manufacturer's stock Price on request - + Recommended CTS-10770 Waste Valve, V3 (2 Way Solenoid Valve) Price on request CTS-21192 Cartridge, BioAcquity, I2V Price on request CTS-11371 ACQUITY I2V BSM Performance Maintenance Kit Price on request